This LED marine light is the only pop-up style navigation light on the market. Pop-up style light folds down flush with your deck when not in use, allowing for a cleaner appearance. USCG approved light provides LED beam up to 2 nautical miles away. Made from marine-grade 316 stainless steel. Stud length is 2". Requires drilling a 3-1/2" hole for installation. Mounting screws not included.